kubernetes blog

How to build a Kubernetes (k8s) Environment The official version of k8s is updated too quickly. Many articles on the Internet are outdated and many tools and interfaces have changed. the official website does not have a good understanding. Here we only record the process of setting up the k8s environment and will not talk about many k8s concepts. Therefore, we recommend that you first understand various concepts and then build the environment, then, i

The content of this section: Traefik Introduction Two services deployed for testing Role Based Access Control configuration (Kubernetes 1.6+ only) Deploying Traefik Deploying Ingress Deploying the Traefik UI Access test Health Check I. Introduction of TraefikTraefik is a front-end load balancer with good support for orchestration tools such as MicroServices architecture, especially

Helm IntroductionDeploying container cloud Applications (container or microservices orchestration) in Kubernetes is a challenging task, Helm is to simplify the installation of a client tool for deploying container cloud applications in Kubernetes. Helm enables developers to define, install, and upgrade container cloud applications in Kubernetes. At the same time,

Ubernetes is the King of container orchestration and scheduling, it beats the competitors Docker swarm and Apache Mesos, opens the bright future, microservices can be self-repairing, can be automatically expanded, can cross zone, Region even across cloud providers for federate. In this new era of cloud-native applications, it is becoming increasingly important to have a simple insight into how services interact with each other, which can be different from a haystack-wide search for a specific ca

master node's own IP address, cluster_ip_subnet for the entire cluster subnet range, For example, 192.168.0.0/16, while Master_switch_subnet is the subnet range that the pod on the master node can allocate, such as 192.168.1.0/24SOURCE Link: https://github.com/YaoZengzeng/scripts/blob/master/ovn-k8s-master.sh4, at first I was using KUBEADM to build k8s cluster, but when the API server through http://127.0.0.1:8080 to find that the port is not open, it may be kubeadm by default is not open the p

Yum-y Install ETCD Docker flannel kubenetesGeneral will encounter no k8s source problem, first Yum update-y see if it is effective, if still useless to create a Yum source, and then install KubenetesDo the following:Create a Yum sourcevi virt7-docker-common-release.repoAdd the following content:[virt7-docker-common-release]name=virt7-docker-common-releasebaseurl=http://cbs.centos.org/repos/virt7-docker-common-release/x86_64/os/gpgcheck=0Installation ServicesExecute the following command to inst

1. Reference documentationhttp://traefik.cn/2. Simple way to accessReference documentshttps://tonybai.com/2018/06/25/the-kubernetes-ingress-practice-for-https-service/Previous: Traefik Basic deployment record, describes the simplest HTTP access Traefik, the access process reference is shown below:Client---(via HTTP)---> Traefik----(via HTTP)----;? ServicesNow to practice is more secure and more complex HTTPS access Traefik, there are two kinds of acce

Deployment BookInfo Sample program detailed procedures and procedures (based on kubernetes cluster +istio v1.0)Deploying the BookInfo sample programThe sample application is included in the Samples directory of the downloaded Istio installation package.BookInfo ApplicationsDeploy a sample application that consists of four separate microservices to demonstrate a variety of istio features. This app mimics a category in the online bookstore, displaying i

Kubernetes Kubeadm installation requires the following four packages Kubelet Kubernetes-cni Kubeadm kubectl These four packages can be downloaded via the Https://github.com/kubernetes/kubernetes warehouse to perform make fetch installation packages, and the release version is required if the RPM package is required. In

k8s Basic Concepts1. NodeNode as a working node in the cluster, running a real application, the smallest running unit kubernetes managed on node is the pod. Node runs Kubernetes's kubelet, Kube-proxy service processes, which are responsible for pod creation, startup, monitoring, restart, destruction, and load balancing for software patterns. The information that node contains: node address: The IP address of the host, or node ID. node op

First, introduce This case is based on Kubernetes and Docker, which includes1, Web front-end2, Redis Master3, Redis SlaveWhere the Web front-end interacts with the JavaScript Redis API and Redis Master Kubernetes System Architecture Second, the configuration 0. PrerequisitesKubernetes Cluster 1, start Redis Master use replication controller to ensure that only one pod is running (when a node is down,

/mk-docker-opts.sh/usr/bin5.3.4, configurationVi/etc/sysconfig/flanneldAdd to:# Flanneld configuration options# ETCD URL LocationFlannel_etcd= "http://centos-master:2379"# ETCS Config keyflannel_etcd_key= "/coreos.com/network"# any additonal options#FLANNEL_OPTIONS =5.3.5, editing service files/usr/lib/systemd/system/flanneld.serviceAdd to:[Unit]Description=flanneld Overlay Address ETCD AgentAfter=network.targetBefore=docker.service[Service]Type=notifyEnvironmentfile=-/etc/sysconfig/flanneldEnvi

In this blog post, let's say a question about customizing the configuration in the pod of kubernetes.We know that in almost all application development, configuration file changes are involved, such as in the Web program, the need to connect to the database, cache, and even queues. And one of our applications starts with writing the first line of code, going through the development environment, the test environment, the pre-release environment only to

Kubernetes cluster configuration notes This article describes how to configure a Kubernetes cluster. A kubernetes cluster consists of a master node and a slave node. Run the following services on the Master node:Etcd (the etcd service can also be run independently, not necessarily on the Master node)Kube-apiserverKube-controller-managerKube-schedulerKubeletKube-p

Docker Network BasicsSince Kubernetes is based on the Docker container as the carrier of the application release, the network characteristics of Docker also determine that kubernetes in building a container interoperability network must solve the problem of Docker's own network.Network namespacesTo support multiple instances of the network protocol stack, Linux introduces a network namespace in the network

This is a creation in Article, where the information may have evolved or changed. kubectlFunctions that are actually running ( k8s.io/kubernetes/pkg/kubectl/app/kubectl.go ): func Run() error { cmd := cmd.NewKubectlCommand(cmdutil.NewFactory(nil), os.Stdin, os.Stdout, os.Stderr) return cmd.Execute()} NewKubectlCommandThe code ( k8s.io/kubernetes/pkg/kubectl/cmd/cmd.go ): //Newkubectlcommand creates t

The content of this section: Service Discovery and load balancing Ingress Combat First, service discovery and load balancingIn the previous installation deployment Kubernetes cluster, it was simple to demonstrate that pod and Service,kubernetes implemented service discovery and load balancing for containers within the Kubernetes cluster through

Download deployment Files according to official documentshttps://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yamlEdit this and replace the role name with the following command implementation: Create Kubernetes-dashboard-rbac.yamlDownload the deployment file, there is a place to note, it is created in

The first blog post to the blog site and the first blog post to the blog site Record the first blog post in the blog garden.1. biaoti Content2. biaoti Content Package com.sun.image.codec.jpeg; import sun. awt. image. codec. ex

Summary: Kubernetes is Google open source container cluster management system, built on Docker, for containerized applications to provide resource scheduling, deployment operations, service discovery, capacity expansion and other functions. Pods are the smallest deployment units that are created, dispatched, and managed, and this article describes the communication and scheduling between these pods in detailOverviewThe Pods in